CVE-2025-68698Network attack vector

Ciphertext decryption via PKCS1Encoding padding oracle

Published Jan 13, 2026 · Updated Jan 13, 2026

RSA padding weakness in Jervis before 2.2 allows attackers with a decryption oracle to decrypt ciphertext without the private key. SecurityIO.groovy wraps RSAEngine with Bouncy Castle PKCS1Encoding for RSA encryption and decryption instead of OAEP, exposing PKCS#1 v1.5 padding behavior. Exploitation requires observable timing differences or error messages; Jervis's built-in use protects locally stored, short-lived GitHub App tokens.

CVSS severity8.7
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

RSA padding weakness in Jervis before 2.2 allows attackers with a decryption oracle to decrypt ciphertext without the private key. SecurityIO.groovy wraps RSAEngine with Bouncy Castle PKCS1Encoding for RSA encryption and decryption instead of OAEP, exposing PKCS#1 v1.5 padding behavior. Exploitation requires observable timing differences or error messages; Jervis's built-in use protects locally stored, short-lived GitHub App tokens.

The record

CVE
CVE-2025-68698
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Sam Gleske
Product
Jervis
Classifications
CWE-327, T1140
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sam Gleske · Jervisversion=< 2.2

Published CVSS scores

8.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm
T1140Deobfuscate/Decode Files or Information

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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